Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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When adjusting coverance blue lines are not adjusting on the top quarter of the tv

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Convergence amp is defective

Posted on Jun 26, 2009

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Blue line, blue out of sinc along botttom 1/4 of tv


If this is a Rear Projection T.V, your CRT is going bad. You can take the front cover off and make slight adjustments on the blue screen control to get rid of any lines, as far as the blurriness of blue, that part is 500 dollars to fix. The most you can do is just get rid of the lines. There's a black box. Make sure you are very gentle with your adjustments. Just turn it back to how it was if the screen shuts off. I recommend turning down the brightness of the T.V. before you do this repair.

Jun 18, 2011 | Panasonic Televison & Video

1 Answer

Started with a very distorted and jumpy picture. after 20 mins adjust to a constant but suttle rippling action top quarter of the screen. now the entire unit is dead will not power on.


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

Feb 16, 2010 | Toshiba 50HDX82 50" Rear Projection...

1 Answer

Sony, tv comes on color fine, then turns red


I had the same problem with my TV, but the hue was blue. I was told that not only did I have to replace the picture tube that wasn't staying on, but I would have to replace them all because they would not mix properly. After much investigation, I found that there is an adjustment for a variable power supply to each tube that can brighten and lighten each tube. I adjusted the RED pot and my picture color issue was resolved! To access this adjustment you must remove the front panel on the TV. At the bottom corners there are two small screw covers that you must remove. Then un-screw the screws under the covers. Then pull the front panel off of the TV, (it hooks under the top near the screen so it will swing out from the bottom). Now remove the wooden panel in the center, (four screws). The pot adjustments are at the bottom of the TV. They are marked for Red, Blue, and Green. They are extremely sensitive, don't turn them much! If you over adjust you will get red, green, or blue lines on your screen. Adjust back down to remove these, (this is also the remedy for removing these lines that can appear over time). Good Luck and God Bless!

Mar 17, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

I have a Orion tv md FTV 2701 that has a vertical problem. It has horizontal lines across the top. Maybe a vertical size adjustment problem but don't know where the adjustment is. Could you help me? JDR


change the horizontal output transistor Big round quater sized thing on a heatsink. Next, posssibly the Capacitors are bad , will read 0 , big ones near the quarter sized transistor...

Mar 07, 2009 | Televison & Video

1 Answer

Vertical line on side of LCD TV


Modern televisions have screens divided into sections. Each section controls all the rows in its area, and it is controlled by its own video separate video driver. If you are missing a line in a section, then a problem has occurred with the driver board in that area. It will be pretty expensive to fix, I hope your warranty has not just expired!

Jan 08, 2009 | Televison & Video

1 Answer

Blue Horizontal arching lines, Blue hue at power on


if you take the front cover off the tv, you will see 6 little nobe, the top 3 are focus, bottom 3 are brightness, should be RED-BLUE-GREEN in order from left to right, find the one that is blue, turn it down a quarter turn, should fix the problem

Dec 31, 2008 | Sony KP-46WT500 46" Rear Projection...

2 Answers

Colors off. blue and yellow not lined up


try to set the convergance if you cant you can adjust the color tubes from inside the tv but have to be very careful to do this. There is actually only 3 colors in the tv red, blue green so I would say your blue and green need lined up

Sep 30, 2008 | Televison & Video

1 Answer

Sony KP65WS500 5 blinks


Hi,
1st set Brightness and Contrast settings to 50% at tv menu.
You need to cover 2 CRTs with any thing like thick paper while adjusting 3rd CRT.
For example, lets adjust Red CRT G2 volts, Select audio-video input 1 and cover green and blue lens with paper note-book and rotate Screen control up to level where you see retrace lines on projection screen, now decrease screen volts (G2) so retrace lines disappear and projection screen should be blank.
Now do same process with green and blue adjustment while other lenses should be covered.
Im not sure I conveyed it to you properly or not because English is not my 1st language.
Thank you.

Sep 23, 2008 | Televison & Video

1 Answer

Line on screen


if you found out how to fix or what is wrong with tv please let me no shanequinn@tiscali.co.uk

Apr 07, 2008 | Fujitsu Plasmavision PDS-4233 42 in....

1 Answer

Thin red horizontal lines across screen


While looking at your TV, remove the bottom right speaker grill. There you will find a cover held by a couple of screws. Remove the screws and behind the cover you will find the "focus pack" which is a group of 6 adjustment screws. The top screws adjust (in order from left to right) the brightness of Red, Green and Blue.

What you will do preferably at night (or with the room dark) turn the top left adjustment screw (Red) all the way to the left and then gradually turn it to the right until the point you can see the retrace line and then turn it slightly to the left until the retrace line disappears. That's it! You can do this for all three colors - if need be. These do go out of adjustment every now and then. The 3 screws on the bottom are to focus the colors individually to minimize "bloom" on the screen. It's best to be in service mode on your TV when doing this OR open up the cabinet and cover (with something) the other 2 colors while you adjust the focus of the color you're adjusting.

Good Luck!

S

Mar 13, 2008 | Sony Grand WEGA KDP-57XBR2 57" Rear...

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